Abstract
Objective: To investigation the effect of age, obesity, smoking, infections, varicocele, period of abstinence and
liquefaction, sperm parameters. Patients and methods: The study was carried out between January 2022 and July 2022 which
including (60) selected infertile patients who attended the fertility center in Al-Sadr Medical City-Najaf-Iraq. The Parameters for
the semen analysis were analyzed and classified according to the WHO criteria (WHO, 1999). Patients should give their semen for
analysis in the laboratory by masturbation. Results: The results showed that significant (P<0.01) difference in semen volume,
sperm concentration, progressive motility percent (A+B) and normal morphology in relation to age, body mass index and smoking,
also the results revealed a significant (P<0.01) reduction in semen volume, progressive motility (A+B) and normal morphology in
leukocytospermia. The results in current study also showed a significant (p<0.01) difference in Semen volume, sperm concentration
and progressive motility (A+B) in relation to duration of abstinence, a significant (P<0.01) decrease was noticed via 2-3 days
compared to other groups of duration of abstinence, there was a significant (p<0.01) decrease in sperm concentration, progressive
motility (A+B) and normal morphology in varicocele positive, a significant (P<0.01) decline in sperm concentration, progressive
motility (A+B) and normal morphology was showed with group ≥30 minutes of Liquefaction time. Conclusion: Advance paternal
age, obesity and smoking lead to a deterioration in sperm parameters and thus contribute as one of the causes of male infertility,
also the infections, varicocele, period of abstinence and liquefaction time have a negative impact on the semen quality, which leads
to decrease male fertility.